Column 1 is title (or place name), 2 is latitude, 3 is longitude.
Uploaded CSV has column headers as first line.
Click any cell in the row you wish to edit.
Click the map to enter mouse coordinates into spreadsheet.
Press ENTER to make a new row. Press TAB to make a new column.
If you add a date column use negative values for BC dates (eg: 10,000BC is -10000).
Save to disk (as csv)
Save to disk (as kml)
Add Date column
Show help (this popup!)
Delete sheet (won't affect local files)
Functions similarly to other software, such as Microsoft Excel.
Left click to select cell, click row/column header to select that row/column.
Left click and drag to select specific cells.
Double left click a cell to manually edit the contents
Right click to display a context menu (for functions such as delete row, copy, etc).
For more detailed help, see the Help